Button tool



FIG. 1 is a perspective view of a button tool;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof, the right side being a mirror imagethereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing of a screw hole in FIGS. 1, 2 and 3 is includedfor the purpose of illustrating a portion of the button tool that formsno part of the claimed design.

The ornamental design for a button tool, as shown and described. 